1. coming after the fourteenth in order or position

1. the fifteenth item in a series
2. one of fifteen equal parts of something

Examples

• She finished in fifteenth place in the race.
• The fifteenth century was marked by great exploration.
• Today is the fifteenth of March.
• He was the fifteenth person to arrive at the party.
• The cake was divided into fifteen pieces, and I got the fifteenth.
• Only one-fifteenth of the students passed the advanced exam.
• The fifteenth amendment was ratified in 1870.